BONITA  Clark Adkisson, California’s oldest living former state park ranger, will celebrate his 100th birthday this Saturday. Party plans included a menu catered by El Indio Mexican Restaurant, music from his favorite albums and a guest list of 120 of his closest family members and friends who will be coming to his Bonita home from all corners of the country.

His baby brother, 89-year-old Roy Adkisson, will be in attendance. So will his two daughters, four granddaughters and four of his five great-grandchildren.

Adkission was 51 in 1964 when he quit his job driving a truck for Mobil Oil and applied to the park service. “He just couldn’t stand the asphalt jungle anymore,” said his daughter Kate Brodeur.

He first post was as a park attendant at Humboldt Redwoods State Park, taking a $150 a month pay cut from his Mobil days, but getting to live in a house on a campground close enough that he could walk to work. He was later promoted to Ranger 1 at Old Town State Historic Park and was a ranger and maintenance worker at Silver Strand State Beach in Coronado before retiring in 1978.

Adkisson was born in Savannah, Tenn., and raised in Oklahoma, the second of six children. A field mechanic in the Marine Corps during World War II, he and his late wife, Rachel, moved to California in 1941 and bought their home in Bonita 30 years ago.

Last year, half of his colon had to be removed because of cancer, but he remains alert and loves to read and watch as much baseball as he can find on television, particularly the Eastlake All-Stars little leaguers, Brodeur said.

To what does he attribute his longevity?

“He would probably say clean living, which is a bunch of bull,” Brodeur said. “It’s a family thing. His mother died five months before she turned 100.”